TBP likes to accuse anybody who believes that LMR exists to be a potential rapist.

LMR is simply the idea that a woman doesn't want to be considered a slut, so she puts up a defense such that later she can tell herself that she isn't a slut because she said "no" at first.

It's also considered a "shit test" because of this: women like men who are experienced at sex. Experienced men understand LMR; inexperienced men don't. Your reaction to her LMR tells her if you are a sex god or a clueless asexual.